We're dividing 331398 by 20 
We want to divide 331398 by 20.

Moving on to step 1:
The number 20 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 20

Going ahead to step 2:
20 goes into 33 1 times with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 13 after subtracting 20 from 33.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 20

Let's proceed to step 3:
131 divided by 20 is 6 with a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 120 from 131 leaves us with 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 20

Going ahead to step 4:
The number 20 fits into 113 5 times, leaving a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 165.0
Deduct 100 from 113 and we're left with 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 20

Moving on to step 5:
20 can be fit into 139 6 times, resulting in a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 1656.0
If we take 120 away from 139, we end up with 19.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 20

Advancing to step 6:
20 goes into 198 9 times with a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 16569.0
Subtract 180 from 198 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 7:
180 divided by 20 is 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 16569.9
Deduct 180 from 180 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 16569.9
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16569.9
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 16569.9 with a remaining 0.0.